He was the son of Ralph Isaacs Ingersoll and Margaret Van den Heuvel.
He became Clerk of the state senate in 1843 and later secretary of the American Legation in St Petersburg. He had become the chargé d'affaires from the time of the resignation of his father as US Minister to the arrival of Arthur P. Bagby, his successor, in 1848. He was a representative in the 32d and 33d congresses, 1851-55, and adjutant-general of Connecticut in 1867 and 1871.
The Twentieth Century Biographical Dictionary of Notable Americans, vol. 5; Biographical Directory of the American Congress, 1774-1949 at www.ancestry.com (accessed 2002).